Hi Alfonse,

I have created the new ticket for bug: Ticket #112

Can I have one more question related to the subject, please:

The quaternion constructor below accepts a glm::vec3 vector as...

Hi again, Alfonse,

Yes, you understood my question correctly. Thank you for your answer. I see, I found someone very experience, and I will take my chances, and try to get as much information as...

Hi Alfonse,

Ok, I will accept your advices. I have written my own exporter from 3D authoring application, which I use. I wished to avoid rewritting everything, therefore I decided converting euler...

Is the following correct, please? I wish to perform quaternion interpolation:


//myInterpolatedRotQuat = glm::mix(glm::quat(1.0f, pvAnimation->at(nFrameNo).vecRotation.x,...

Hmm.. am I doing something wrong, that I can not multiply Quaternions with overloaded * operator? Is there a way for quaternion multiplication?

I include the following: #include...

Hi Groovounet,

thank you for your reply. In other words, if I have the following Eular angles: [20, 30, 40], can I perform quatrnion initialization followingly?


glm::gtx::quaternion myXQuat =...

Dear all,

this question will be most of you elementary, but I can not find a way: if all I have are Eular Angle Coordinates [x, y, z] for rotation, how exactly to initialize guaternion() with...

Hi dukey,

sometimes things look more difficult than they really are.

I applied LookAt() matrix with model matrix, and futher multiplied it with projection matrix to receive ModeViewProjection...

Not to let this question become forgotten, does anybody anything to say on this topic?

Are you able to display a texture on a polygon yet? If yes, then prepare large texture set (an image with small texture tiles one by one). Then, simply replace the texture coordinates ranging from...

Hi Mhagain,

Thank you for your very nice explanation. As I was reading your text two more questions came to my mind, and I would like to kindly ask to consider for answering:

1. Is there a...

Hi Bcthund,

Thanks for your response. I am just reading the OpenGL Superbible 5th edition, and that book si simply superb.

Dear all,

I haven't tried it, but have heard, that there is an output texture quality difference when displaying 2D graphics via Ortho view versus Perspective view.

The articles I have read in...

Dear all,

can I kindly ask for a guidance on how to implement efficient 2D scrolling/panning mechanism in OpenGL ES 2.0? The panning should be as effective as possible.

Will the proposed...

Thanks folks.

Hi Carsten,

thank you very much for your information. Well, I would appreciate SLERP instead of LERP, as SLERP should provide better smoothnes.

Thank you very much, indeed.

Ah, I will have to include Quaternions extenstion of GLM. Thank you very much. I am happy to have SLERP.

Hi Alfonse,

yes, I was talking about GLM. Would you be so kind to tell me where to find that "mix" function? I discovered GLM today, so probably, I do not know yet, where is what I need. Thanks.

Dear all,

Is Quaternion Interpolation (SLERP) function available in (GLM)GLMath? I simply can not find it. In my opinion, it is quite necesary function. If it not yet present, I would strongly...